Fusible device.



A. 1. LoEPsrNGER.

FUSIBLE DEVICE. APPLICATION FILED MAYZI, I9I0.

Patented July 20, 1915.

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ALBERT J'. LOEPSINGER, 0F PROVIDENCE;` RHODE ISLAND, ASSIGNOR TO GENERALvEIlRlil EXTINGUISHER COMPANY, OF 'NEW YORK, N. Y., A CORPORATION OF NEWYORK.

FUsIBLn DEVICE,

Specification of Letters Patent.

Patented July 20, 1915.

T0 all whom t may concern:

Be it known that I, ALBERT J'. Lonrsiivcnn, of Providence, in the county4of Providence and State of Rhode Island, have invented Vcertain new anduseful j Improvements in Fusible Devices; and I do lhereby declare thefollowing specication, taken in connection with the accompanyingdrawings, forming a part of the same, to be a full, clear, and exactdescription thereof. y

The present invention relates to a fusible device such as is employedfor holding closed the valve o-f an automatic sprinkler or fireextinguisher, or in connection with otherp hereinafter described 'andclaimed.

automatic fire extinguishing apparatus.

The invention relates more particularly to that form of fusible devicewhich is composed of three members, usually termed a post, a lever, anda' key, for reducing the strain upon the fusible solder` joint, as forexample the form of fusible device employed 'for holding the valveclosed in Ithe wellknown Grinnell sprinkler. Y-

Ina device of this character and in which the key-member hasa tendencyto rock under the strain to which the strut is subjected, the greateststrain upon the solder joint `comes 'at the lower endof said key-member,and particularly at the lower edge of what may bevtermed the anchorportion of said key-member.

The object of the present invention isto strengthen the fusible solderjointin a device of this character, and particularly vthe joint betweenthe anchor portion 'of the keymember and the post memberlof said device.

-Tothat end the' invention consists primarily in providing theanchorfportion of the key member of such devicewith a lateral projectionat its end to thereby facilitate the building up at this point-of aridge, or mound of fusible'4 solder, and thereby strengthen the jointbetween such anchor' 'member and the post member of the device.

The invention further consists provid;- ing the anchor portion ofthekey-member at its end with slots, thereby forming tongues or teeth whichserve to, increase the -extent ofthe edge of such anchor portion' towhich the solder can be applied and alsoto provide recesses within 'thecompassfof such anchor `portion, within'which recesses anadditionalamount of solderl may be received.

The invention further consists in provid.-

i'ng the y,anchor portion kof the key member at its end with slots andin providing the intermediate tongues .or teeth formed thereby withlateralprojections. y

The invention further consists in providing the anchor portion of thekey-member at its end withl slots and in providing `the postanember ofthe device with corresponding or registering slots or perforations tothereby render possible the formation of what may be termed a rivet ofsolderA t'o unite the anchor portionl of said key member to said postmember.

. The invention further-consists incertain constructions and combinationof parts .fusible device embodying certain features of the presentinvention, the fusible solder being shown as applied inFig. 3; and Figs.4 and f5 are corresponding front and edge views of a. portion of thepost member and 0f the anchor portion of the key member embodying afurther features of the inven tion, the fusible solder being .shown asappliedliILFig. 5.

In the sprinkler shown in Fig. l' the body portion 1 withV thescrew-threaded neck 2,

the yoke 3, and def-lector 4 are or may be all of the usualconstruction. So also the fusible device is of the usual `,constructionin the lrespect that it comprises three members, viz.the post 5 lever 6,and key 7, said keyl member being provided with an anchor portion 8adapted to be secured -by fusible solder to the face of the post-member5.

Referring first to the construction shown in Figs. 2 and 3, the .anchorportion 8 of the key-member is provided with slots 9 formingv thetongues or teeth 10. The lower ends of these tongues are bent outward orotheriop wisc provided with outward or lateral 'projections 1l. Thefusible 'solder is applied in the form of a ridge or V mound 12,.' as

'shown in Fig. 3. The construction shown in Figs. 4 and 5 is theisame asthat shown in Figs. 2 and-3, and thewcprresponding parts are therefore,similarly numbered, with the exception that the post member 5 is` alsoprovided with slots or perforations 9L corresponding to and registeringwith the slots9 in the anchor portion of the key-'member 7. The slots insaid post-memberv are, however, preferably made somewhat longer than theslots 9 in the key-member, and so as to extend somewhat below the end ofsaid key-member, as shown in Figs. l and 5. With this. construction thefusible solder extends through the slots 9a in the vpost-member and isformed into a ridge or mound 12afon the v opposite side of saidpost-member.

VVithf' the construction above described, and as shown both in Figs. 2and 3 and also invFigs. 'ff and 5, the slots in the anchor por tion of'the key-member form an extended v edge at the end of said key-memberand also form recesses, when the parts are assembled, adapted to receivean additional amount of the fusible solder, while the outward or lateralprojections ll constitute a core or cores, so to speak, about which the'ridge or mound of solder 12 may be built up,

thereby providinga much stronger solder joint' at this point than has-heretofore been possible. It is evident that, if desired,` the slots 9may be omitted, in'which caseI there would be a single continuousoutward or lateral projection about which the ridge or mound of soldermay be built up in the same manner. So also, if desired, the lateral project-ion or projections may be omitted and only 'the slots in the anchorportion of thel viding the pincers with which the parts are held duringthe soldering operation with a mold or depression to receive,the solder.With this construction the fusible solder takessubstantially the form ofa headed `rivet, which serves to still further strengthen the solderjoint and the fusible union between the anchor portion of the key-memberand the post-member of the device. It will be understood that'if such arivet formation of the solder is to be produced it will be desirable tohold the parts in a horizontal position during the soldering operation,with the anchorportion of the key-member uppermost. i,

It will 4be understood that the shape, size, number and location of theslots in the keymember and inthe post-member, respec,

tively, may be varied as desired.

What I claim as my invention and desire `,to secure by Letters Patentis:

l. A fusible device comprising a postmember, a lever-member, and akey-member extending through said post-member and having an anchorportion lying parallel with said post, said anchor portion beingprovided with a lateral projection about which the fusible solder may bebuilt.

'2. A fusible device comprising a postmember, a lever-member, and akey-member extending through said post-member and having an anchorportion'lying parallel with said post, said anchorportion being provvided with slots to receive the fusible solder.

3. A fusible deviceI comprising a postmember, a lever-member, and akey-member extending through said postmember and having ananchor-portion, said anchor-portion being provided with slots and alsowith Aa lateral projection about which the fusible solder may be built.

4. A fusible. device-comprising a postmember, a lever-member, and akey-member extending through said post-member and having ananchoreportion, said anchor-portion being provided with slots and havingthe tongues formed thereby provided with lateral projections.

5. A fusible device comprising a postmember, a .lever-member, and akey-member extending through said post-member and havingananchor-portion, said anchorportion being provided with parallelopen-end' ed slots and said post-member being pro vided with slotsregistering with the slots in said key-member.

6. A fusible device comprising a post member, a lever-member, and akey-member having an anchoreportion, said key-member being provided withslots and also with lateral projections, and said dpost-member beingprovided withlslots registering with the slots in said key-member.

ALBERT J. Loiirsinofnn.

l Witnesses:

W. H. THURs'roN, J. H. THURSTON.

Copies of this patent may be obtained for ve cents each, by addressing'the Commissioner of Patents,

' Washington, D. C.

